Conductor-hook



N5 Model.)

' E. Wl MOHROFF 8n 0. W. DOBELIN.

CONDUCTOR HOOK.

JrQunZnn- 1H! NATIONAL umuenAP WASHINGTON u TATES PATENT Fries.

EDWARD W. MOHROFF AND CHARLES W. DOBELIN, OF MADISON,

VVISOONSIN.

CONDUCTOR-HOOK.

SPECIFICATION forming part of Letters Patent No. 518,196, dated April10, 1894.

Application filed May 20, 1893. Serial No. 474,972. (No model.) A

To all whom it may concern.-

Beit known that we, EDWARD W. MOHROFF and CHARLES W. DOBELIN, ofMadison, in the county of Dane and State of Wisconsin, have invented anImprovementin Conductorflooks, of which the following is a specificaion.

The object of our invention is to construct a conductor hook havingacircular holderfor the pipe which is divided, opens upon a hinge,incloses the pipes when closed, and is fitted to the pipe, and to pipesvarying in size by means of graduated devices for closing; and by whichdevices the holder is closely pressed upon the pipe and locked so as toprevent its displacement by storms, &c., by its weight'or even by theweight of a person escaping upon .it from a fire, and whether .the piperuns diagonally or vertically. We attain these objects by the mechanismillustrated in the accompanying drawings, in which Figure 1. is a topview of our hook with a spike shank for driving intoa brick or stonewall; Fig. 2. a side view of same; Fig. 3. an end view of a section ofthe rearjaw, with a modified attachment for a wooden building inplace ofthe spike shank, consisting of a fastening plate and wood screws; Fig.4. a front View and Fig. 5. a side View of Fig. 3.

Similar letters refer tosimilar parts throughout the several views.

a, Figs. 1 and 2, represents the form of the shank of our hook which isused for its attachment to brick and stone walls. The shank projectsrearwardlyfrom the central point of the rear jaw where the latter iscontiguous to the wall when in place. The shank is gradually drawn intoward the end and terminates in a spike form. It is driven into themortar while the holder isv widely opened on its hinge and before theconductor is placed, so that the hammer can strike inside the base ofthe shank upon the jaw.

A modified device in place of the terminal or spike portion of the shanka, for attachment of my holder to wood buildings, is represented inFigs. 3, 4. and 5, in which-- A represents a short, blunt shankprojecting rearwardly from the central point of the rear jaw where thelatter is contiguous to the wall. I

0. represents a fastening plate attached centrally upon its face acrossthe end of the shank and havinga screwhole near each end. 5. 8.represent wood screws one respectively in each end of the fasteningplate driven home to their heads into the wooden wall or other woodenstructure.

Aside from the described modifications in the devices for attachment tothe building the one represented bythe letterain Figs. 1. and 2. and theother by the letterings in Figs. 8.

4. and 5. the parts of my device are identical.

b represents a semicircular plate or strip of metal which-as it ishinged and locked at its respective ends to a similar part, bothtogether embracing the conductor-forrns the rear jaw of the pipe holderof our hook.

0 represents an ear upon the outer edge of the rear jaw b at its lefthand end extending beyond the end of the jaw proper, and overlying asimilar ear 0 upon the abutting end of the front or outer jaw, it isperforated, with the other ear, for a journal bearing and with such carit receives a journal and the two jaws are thus hinged together.

d represents a latch. consisting of a plate attached edgewise to andprojecting outwardly and beyond the right hand end of the rear jaw b. soas to lap' over the front jaw. Its inner edge at such overlapping partis cut into notches forming a ratchet f. for graduated attachment-tosuch last jaw by means of a spur thereon as hereinafter described. Thelatch has two broken or unmatched series of lateral perforations 9 oneover the other for locking temporarily with a pin key which bearsagainst the front bar of the mortised lug in the front jaw ashereinafter described. '5 represents the outer or front half or jaw ofthe circular holder of our conductor hook and is a semi-circular plateor strip of metal similar to the inner or rear plate I). In the dottedline the jaw is represented as opened for the. insertion of the pipe. Inthe entire line, it is represented as closed and locked.

0 represents an ear upon the outer edge of the front jaw t' at its lefthand end and extending beyond the jaw proper. It is perforated for ajournal and journaled and thus hinged to the similar ear 0 upon theabutting end of the rear or inner jaw b.

70 represents a journal which is in the form of a rivet headed on eachend and having its bearing in the two ears 0 and c, the two cars and thetwo jaws being thus hinged together.

Z represents a lug in the form of a plate based diagonally across andnear the right hand end of the front and outer jaw i projectingoutwardly and having an opening cut through it in the form of a mortisewhich receives the latch (1, when the holder consisting of the two jawsand attachments is closed upon the pipe. The latch d is fastened by thecatch spur h projecting upward placed upon the jaw i at the base of thernortised lug Z; which spur enters that notch of the ratchet whichreaches it when the jaws are pressed upon the pipe. The spur holds allthat is gained.

e. represents a key pin used for temporary insertion through that one ofthe holes g. of either the upper or lower series which touches the lineof the inner bar of the mortised lug Z, thus safely locking theholderunder pressure and preventing it from opening and the pipe from beingdisplaced.

'n. 72. represent spurs one near the right hand end of each jaw for theapplication of tongs or pliers for compressing the jaws on the pipe.

The advantages of our invention are that the device is easily appliedand removed and holds the weight of the conductor firmly whether thesame extends in a lateral, vertical, or diagonal direction preventingits dis- 4o placement by storms by its bearing weight or the weight of aperson escaping upon it from the lug; all said parts combinedsubstantially as set forth.

2. In a conductor hook, in combination with a pair of jaws hingedtogether embracing the pipe a ratchet latch upon one jaw, series ofholes through the latch, a catch holding and a inortised lug receivingthelatch, both upon the other jaw, and a key pin through one of theholes and bearing against the lug substantially as set forth.

3. In aconductor hook in combination with two jaws hinged together atthe ends and holding the pipe alatch attached to one jaw at its otherend overreaching the second jaw graduated series of holes laterallythrough the latch a lnortised lug upon the secondjaw admitting the latchand a pin key in one of the holes in the rear of the lug whereby theholder is firmly pressed around the pipe and locked.

ED WARD W. MOHROFF.

CHARLES W. DOBELIN.

Vitnesses:

CHAS. G. MAYERS, J. E. WAKELEY.

